Improvement in sewimg-f



l. H. STRONG.

Sewing-Machine Casters.

N0.l50,264. PatentedApri|28,1874.

if' Wi JOSErn HENRY s'rnone, OE ADEL, IOWA.

IMPROVEMENT EN SEWINGHMACHINE CASTERS.

Specification forming part of Letters Patent No. 350,264, dated April28, 1874; application filed March 17, 1874.

To all whom it may concern:

Be it known that I, JOSEPH HENRY STRONG, of Adel, in the county ofDallas and State or' owa, have invented certain Improvements in Castersfor Sewing-Machines, of which the following is a specification:

The object ot' my invention is to attach casters to the feet ofsewing-machines and other stands, in sueh a manner that the machine orstand will continually rest thereon, and that the casters can be mademovable and operative, or rigid and inoperative, at will, by adjusting alever. It consists in a bar adapted to connect the stand feet withcasters pivoted thereto, and within circular brakes that are mounted,carried, and operated upon the same bar, all as hereinafter fully setforth.

My drawing is a perspective llustratin g the construction, application,and operation oi' my invention.

A A is the feet-connectin g bar. It may be made ci' wood or metal, inany suitable manner. It is bent downward at the ends to leave itscentral portion bowed and elevated. Recesses in the ends are designed toreceive the feet of the machine or stand. They must necessarily vary inform to suit feet of various forms. a a are slots in the sides and endsof the bar, made to intersect the recesses in the.

tops. Setserews b I) are passed through and adjusted therein to clampand lock the bar and its casters to the stand or machine. B B are commonswivel-casters pivoted under the elevated portion of the bar A, and inthe center of rin g-form brakes that will always, when operated, engagethe caster-wheels, regardless or' the direction assumed by the casters.c c are brakes suspended by the fulerums d, pend ent from the centralportion of the bar A. Their inner ends and long-arm levers rest in thehook, loop, or link f, that is passed upward through an opening in themiddle of the bar A. Their outer ends and short-arm levers termin ate inrings that surround the casters.

The inner surface of the rings may be beveled 0r concave to improvetheir gripe upon the casters when they are applied as brakes to hold thecasters rigidly and inoperative. g is a lever mounted upon the top ofthe central portion ot' vthe bar A, and connected with the long-armlevers of the brakes c c by means ot' the link j. h is an uprighttoothed pin or rack attached to the end and top of the bar A. Its teethcorrespond in i'orm with the edge of the lever g, by which they areengaged.

Pressing the free end of the lever g downward causes its short end torise and, by means of the link f, draw up the levers of the brakes c,and press down the ring-form brakes to engage the caster-wheels.Allowing the edge of the lever g to engage the rack h affords a means Oiloekin g the ring-brakes upon the caster-wheels to make them inoperativewhenever desired.

A person may, therefore, by pressure with a foot, lock and unlock thecasters at will, and thereby allow the machine ,mounted upon myattachments (one is designed to be under each end) to stand firmly upona solid base or rest loosely upon caster-wheels that will allow themachine to be moved without liftin 0*.

I claim as my invention- The rin g-form brakes c, when constructed A toinclose and engage swivel-casters B, substantially as described, and forthe purposes specilied.

2. An attachment for sewin g-machines and stands composed of the bar A,casters B, setscrews b, rin gform brakes c, and their fulcrums d, thelink f, the lever g, andthe rack h, all arranged, constructed, andoperating substantially as described and shown, for the purpose setforth.

JOSEPH HENRY STRONG.

-Witnesses:

E. GOUGHNOUR, x J. W. CooNs.

